Update duckdb index files

.gitattributes

@@ -326,3 +326,4 @@ bg_wikipedia/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cs_other/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cs_wikipedia/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cs_legislation/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+da_caselaw/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text

da_caselaw/validation/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1101c7613354fe530f3588edc9bc0e574a3c606c6c10b668b2e94ed99381fda3
+size 8663040